Copper(ii), cobalt(ii), manganese(ii) and nickel(ii) bis(hexafluoroacetylacetonate) complexes with N-vinylimidazole

Two new manganese(ii) and nickel(ii) bis(hexafluoroacetylacetonate) complexes with N-vinylimidazole were synthesized and characterized by single crystal X-ray diffraction analysis, UV-VIS and IR spectroscopy. Their structures were compared with those of related copper(ii) and cobalt(ii) complexes. In the case of copper complex, the coordination site formed by hexafluoroacetylacetonate at the Cu²⁺ ion and nitrogen atoms of the two vinylimidazole cycles is slightly distorted, while in all the other considered complexes, this distortion is insignificant.